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TECHNICAL PAPERS

Experimental Analysis of an Axial Inducer Influence of the Shape of the Blade Leading Edge on the Performances in Cavitating Regime

[+] Author and Article Information
F. Bakir, S. Kouidri, R. Noguera, R. Rey

ENSAM–Centre de Paris, 151, boulevard de l’Ho⁁pital, 75013 Paris, France

J. Fluids Eng 125(2), 293-301 (Mar 27, 2003) (9 pages) doi:10.1115/1.1539872 History: Received May 29, 2001; Revised September 17, 2002; Online March 27, 2003
Copyright © 2003 by ASME
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References

Lakshminarayana,  B., 1982, “Fluid Dynamics of Inducers. A Review,” ASME J. Fluids Eng., 4, pp. 411–427.
NASA, 1971, “Liquid Rocket Engine Turbopump Inducers,” SP 8052, May.
Geai,  P., 1997, “Observations of Oscillating Cavitation of an Inducer,” ASME J. Fluids Eng., 119, p. 742.
Tsujimoto,  Y., Yoshida,  Y., Maekawa,  Y., Watanabe,  S., and Hashimoto,  T. 1997, “Observations of Oscillating Cavitation of an Inducer,” ASME J. Fluids Eng., 119, pp. 775–781.
Hashimoto,  T., Yoshida,  M., Watanabe,  M., Kamijo,  K., and Tsujimoto,  Y., 1997, “Experimental Study on Rotating Cavitation of Rocket Propellant Pump Inducers,” J. Propul. Power, 13, pp. 488–494.
Bakir, F., Kouidri, S., Noguera, R., and Rey, R., 1998, “Design and Analysis of Axial Inducers Performances,” ASME Fluid Machinery Forum, Washington DC, Paper No. FEDSM98-5118.
Acosta, A. J., 1993, “Flow in Inducer Pumps, an Aperçu,” Proceedings 4th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, Vol. A., ISROMAC, pp. 1–13.
Offtinger, C., Henry, C., and Morel, R., 1996, “Instabilité de fonctionnement en débit partiel d’un inducteur fretté. Comparaison avec le cas non fretté,” 3ème Journée Cavitation, SHF, Grenoble France, pp. 31–38 (in French).
Huang,  J. D., Aoki,  M., and Zhang,  J. T., 1998, “Alternate Blade Cavitation on Inducer,” JSME Int J. Ser., B. 41(1), pp. 1–6.
Noguera, R., Rey, R., Massouh, F., Bakir, F., and Kouidri, S., 1993, “Design and Analysis of Axial Pumps,” ASME Fluids Engineering, Second Pumping Machinery Symposium, ASME, New York, pp. 95–111.
Arnone, A., Boncinelli, P., Capuani, A., Spano, E., and Rebattet, C., 2001, “Ariane 5 TPLOX Inducer Design Strategies to Enhance Cavitating Performance,” Proceedings, Fourth International Symposium on Cavitation, CAV2001 Session B7.004, Pasadena, CA, June 20–23.

Figures

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Inducers configurations
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Sketch sharpened leading edge
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Hydrodynamic test bench of the LEMFI–Paris
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Experimental performances of the inducer A1 (uncertainty in N±2 rpm, in efficiency ±1 percent, in σ±0.002, in Q/Qn±0.02, in ψ±0.002)
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Appearance of the cavities of cavitation N=1450 rpm,Q/Qn=1.09 (uncertainty in N±2 rpm, in σ±0.002, in Q/Qn±0.02)
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Various figures of cavitation, A1 inducer 1450 rpm (uncertainty in N±2 rpm, in σ±0.002, in Q/Qn±0.02)
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Overall performances of the inducers A1, A3, and A5, experimental results (uncertainty in N±2 rpm, in efficiency ±1 percent, in Q/Qn±0.02, in ψ±0.002)
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Overall performances of the inducers A1 and A5, POMAX model
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Evolution of the head versus σ available inducers A2 to A5 (uncertainty in N±2 rpm, in σ±0.002, in Q/Qn±0.02, in ψ±0.002)
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Cutting influence (uncertainty in N±2 rpm, in σc±0.002, in Q/Qn±0.02)
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Cutting influence—figures of cavitation, N=1450 rpm,Q/Qn=1.27, σ=0.12 (uncertainty in N±2 rpm, in σ±0.002, in Q/Qn±0.02)
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Cutting influence—BladeGen+calculation, N=1450 rpm,Q/Qn=1.27, σ=0.25
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Parametric study—BladeGen+calculation, N=1450 rpm,Q/Qn=1.27, σ=0.25
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Influence of the various cuttings on the fluctuations in pressure downstream from the inducer N=1450 rpm (uncertainty in N±2 rpm, in σ±0.002, in Q/Qn±0.02, in Δpf±0.002)
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Sharpening influence (uncertainty in N±2 rpm, in σc±0.002, in Q/Qn±0.02)

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